Assembly for preforming wire during helical winding |
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| 申请号 | US45093074 | 申请日 | 1974-03-13 | 公开(公告)号 | US3896860A | 公开(公告)日 | 1975-07-29 |
| 申请人 | ROCKWELL INTERNATIONAL CORP; | 发明人 | IANNUCCI VINCENT A; | ||||
| 摘要 | A wire preforming assembly is fixedly mounted on a circular turntable having thereon a plurality of bobbins dispersed in an array to provide a plurality of wires to the assembly equally spaced around its periphery. The assembly and the turntable are coaxially aligned with and relatively rotating about a longitudinally advancing, mandrelled hose. The wires are being directed to the hose by the preforming assembly so that the hose pulls the wires with uniform equal tension and causes them to be simultaneously wrapped thereon in side-by-side parallel helical convolutions. The wire is directed in a helical path around the surface of a preforming tube of the assembly and is bent toward the hose as it is being wound thereon. The bending imparts a characteristic to the wire which causes it to naturally retain the desired helical shape around the hose. | ||||||
| 权利要求 | 1. A preforming assembly for preforming wire being wound on an elongated member, said wire being supplied from a source being relatively rotated about and relatively displaced along the longitudinal axis of said elongated member to cause said wire to be wound on said elongated member in a helical shape, said preforming assembly comprising: means for guiding said wire around an outside surface of a cylindrical tube which is coaxially aligned with said elongated member and has a diameter greater than the diameter of said helical shape to cause said wire to slide along said outside surface through a substantially helical path, and means for bending said wire toward said elongated member as it leaves said helical path and said outside surface of said cylindrical tube through a curved path having a radius less than the effective radius of said helical shape. 2. A method of preforming wire being wound on an elongated member, said wire being supplied from a source being relatively rotated about and relatively displaced along the longitudinal axis of said elongated member to cause said wire to be wound on said elongated member in a helical shape, said method comprising: guiding said wire after leaving said source around an outside surface of a cylindrical tube to cause said wire to slide along said outside surface through a substantially helical path which said path is coaxially aligned with said elongated member and has a diameter greater than the diameter of said helical shape, and bending said wire as it leaves said helical path and said outside surface of said cylindrical tube and is relatively pulled toward said elongated member to be wound thereon through a curved path having a radius less than the effective radius of said helical shape. 3. A method for winding wire on an elongated member comprising: supplying said wire from a source, relatively rotating said source about and relatively displacing said source along the longitudinal axis of said elongated member to cause said wire to be wound on said elongated member in a helical shape as said wire is being pulled from said source by said rotating and said displacing, guiding said wire after it leaves said source along a substantially helical path by said pulling of said wire around an outside surface of a cylindrical tube which is coaxially aligned with said elongated member and has a diameter greater than the diameter of said helical shape, and bending said wire as it leaves said helical path and said outside surface and is relatively pulled toward said elongated member through a curved path having a radius less than the effective radius of said helical shape. 4. A preforming assembly capable of preforming wire being wound on a hose work product, said wire being supplied from a source being relatively rotated about and relatively displaced along the longitudinal axis of said hose work product to cause said wire to be wound on said hose work product in a helical shape, said preforming assembly comprising: a preforming tube mounted to extend along said longitudinal axis from said sourCe of said wire during winding, said preforming tube having a cylindrical outside surface portion which is coaxially aligned with said hose work product and has a diameter greater than the diameter of said helical shape, said cylindrical outside surface portion being generally disposed between said source and said hose work product during winding so that said wire is drawn by said relative rotation and said relative displacement of said source and said hose work product along a helical path around said cylindrical outside surface portion, said cylindrical outside surface portion terminating at a preforming edge of said preforming tube, said wire capable of being deformed about said preforming edge through a curved path as said wire is drawn toward said hose work product from said helical path, and said curved path having a radius less than the effective radius of the effective curve of said helical shape. 5. The preforming assembly as set forth in claim 4, further including a collar which closely encircles said cylindrical outwide surface of said preforming tube with a distance therebetween which is greater than the diameter of said wire and less than twice said diameter of said wire. 6. A preforming assembly as set forth in claim 4, further including a deflecting surface facing said preforming edge and adjacent thereto, said deflecting surface having a portion adjacent said wire during winding which is generally parallel with said wire as it extends between said preforming edge and said hose work product and means for adjusting the distance between said deflecting and said preforming edge to allow said deflecting surface to be selectively contacted by said wire being deformed about said preforming edge to alter said radius of said curved path. 7. A preforming assembly capable of preforming a plurality of wires being wound in side-by-side convolutions on a hose work product, said wires being supplied from a plurality of bobbins mounted in an array about a support table as said support table is being relatively rotated about and relatively displaced along the longitudinal axis of said hose work product to cause each said wire to be wound on said hose work product in a helical shape, said preforming assembly comprising: a support structure capable of being rigidly mounted to said table, a preforming tube mounted at a first end on said support structure for extension away from said table in a direction for alignment with said longitudinal axis, said preforming tube having an opening for receiving said hose work product therethrough and a cylindrical outside surface which is coaxially aligned with said hose work product received within said opening and has a diameter greater than the diameter of said helical shape, and said preforming tube having a preforming edge at its second end which edge includes a surface extending generally inwardly from said cylindrical surface. 8. A preforming assembly as set forth in claim 7, wherein the diameter of said hose work product ranges from 3/8 of an inch to 3 inches, said cylindrical outside surface has a diameter of about 3 1/2 inches, and said preforming edge has a radius of curvature of about 1/8 of an inch. 9. A preforming assembly as set forth in claim 7, further comprising: a collar mounted on said support structure to encircle said cylindrical outside surface of said preforming tube with a radial spacing therebetween having a thickness which is greater than the diameter of said wire and less than two times said diameter of said wire. 10. A preforming assembly as set forth in claim 9 wherein said collar is mounted for movement within a plane which is perpendicular to said longitudinal axis to allow uniform self-alignment with said cylindrical outside surface of said preforming tube when said plurality of wires are located within said radial spacing. 11. A preforming assembly as set forth in claim 9, further comprising: a deflecting lip moUnted on said support structure to locate an inclined surface of said deflecting lip adjacent said preforming edge, said inclined surface extending inwardly of said cylindrical outside surface and terminating outwardly of said hose work product when said hose work product is received within said opening of said preforming tube. 12. A preforming assembly as set forth in claim 11, when said deflecting lip is integral with said collar and said collar is mounted for movement within a plane which is perpendicular to said longitudinal axis to allow uniform self-alignment with said cylindrical outside surface of said preforming tube when said plurality of wires are located within said radial spacing. 13. A preforming assembly as set forth in claim 11, further comprising: means for selectively altering the distance between said preforming edge and said inclined surface in a direction parallel with said longitudinal axis. 14. A preforming assembly as set forth in claim 7, further including: at least one wire gathering ring secured to said support structure and having a gradually curved wire guiding surface thereon. 15. A winding machine capable of winding a plurality of wires about a hose work product comprising: a support table capable of having a plurality of wire supply bobbins mounted in an array thereon, means for relatively rotating said table about and relatively displacing said table along a longtudinal axis of said hose work product so that each said wire is capable of being wound on said hose work product in a helical shape, a preforming support structure fixedly secured to said table, a preforming tube mounted at a first end to said support structure and extending away from said table in a direction for alignment with said longitudinal axis, said preforming tube having an opening for receiving said hose work product therethrough and a cylindrical outside surface which is coaxially aligned with said hose work product received within said opening and has a diameter greater than the diameter of said helical shape, and said preforming tube having a preforming edge at its second end which edge includes a surface extending generally inwardly from said cylindrical surface. |
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